Homework regarding pressure XD

In summary, an underwater diver is cleaning the sea from unwanted objects such as a box by swimming from the water surface P down to the seabed Q. The pressure at the water surface P is equal to the weight of the column of water above the box, which can be calculated using the equation Pressure = Force/Area. The density of the sea water and the depth of the box are also important factors in determining the pressure on the top surface of the box.
  • #1
laura297
2
0
1. An underwater diver swims from the water surface P down to the seabed Q. He is cleaning the sea from unwanted object such as a box.

a) What is the pressure at the water surface P??

b) The box is 10m below the surface P and the density of the sea water is 1150kg/m(cubed). What is the pressure of the sea water on the top surface of the box?



2. Well the only equation i know is Pressure = Force/Area



The Attempt at a Solution


 
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  • #2
Welcome to PF!

Hi Laura! Welcome to PF! :smile:
laura297 said:
The box is 10m below the surface P and the density of the sea water is 1150kg/m(cubed). What is the pressure of the sea water on the top surface of the box?
…
Well the only equation i know is Pressure = Force/Area

Draw the box, with a column of water on top of it, stretching all the way to the surface …

what is the weight of the column of water …

so what is the force on the box …

then use Pressure = Force/Area :wink:
 
  • #3


tiny-tim said:
Hi Laura! Welcome to PF! :smile:


Draw the box, with a column of water on top of it, stretching all the way to the surface …

what is the weight of the column of water …

so what is the force on the box …

then use Pressure = Force/Area :wink:


Thanks a lot =]:biggrin:
 

1. What is pressure?

Pressure is the force exerted on an object per unit area. It is typically measured in units of Pascals (Pa) or pounds per square inch (psi).

2. How does pressure affect objects?

Pressure can cause objects to compress, expand, or change shape. It can also cause fluids to flow or exert buoyant forces on objects.

3. How is pressure related to homework?

Homework regarding pressure may involve calculations or experiments to understand how pressure affects different objects or systems, such as a gas inside a container or a liquid flowing through a pipe.

4. What are some real-world applications of pressure?

Pressure plays a crucial role in many aspects of our daily lives, including weather patterns, scuba diving, and the functioning of hydraulic systems in cars and airplanes.

5. How can I use pressure in my own experiments or projects?

You can design experiments or projects that involve measuring or manipulating pressure, such as building a barometer or studying the effects of air pressure on a balloon.

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